.demode{
    display: flex;
    padding: 10px;
    height: 50px;
    background-color: crimson;
    position: sticky;
    top: 50px;
    color: #fff;
    .iconfont.icon-fangdajing{
        position: absolute;
        font-size: 20px;
        margin-top: 5px;
        margin-left: 5px;
        color: crimson;
    }
    input{
        width: 80%;
        height: 100%;
        padding-left: 30px;
        border-radius: 3px 3px 0 3px;
    }
    .iconfont.icon-kefu{
        position: absolute;
        font-size: 16px;
        margin-left: 83%;
        font-weight: 100;
    }
    .service{
        flex: 1;
        text-align: center;
        line-height: 45px;
        font-weight: 100;
        font-size: 12px;
    }
}